linux.git/arch/sh/kernel/traps.c, branch v2.6.22

sh: oops_enter()/oops_exit() in die().

2007-06-18T09:57:13+00:00

As Russell helpfully pointed out on linux-arch:

	http://marc.info/?l=linux-arch&m=118208089204630&w=2

We were missing the oops_enter/exit() in the sh die() implementation.
As we do support lockdep, it's beneficial to add these calls so lockdep
properly disables itself in the die() case.

Signed-off-by: Paul Mundt

sh: Wire up kdump crash kernel exec in die().

2007-05-21T05:34:37+00:00

Now that we have the basic kdump support in place, add it in to
die() so we can enter the crash kernel automatically.

Signed-off-by: Paul Mundt

spelling fixes: arch/sh/

2007-05-21T05:31:39+00:00

Spelling fixes in arch/sh/.

Signed-off-by: Simon Arlott 
Signed-off-by: Paul Mundt

sh: Convert to common die chain.

2007-05-09T01:55:38+00:00

This went in immediately after SH added the die chain notifiers,
so move over to that instead..

Signed-off-by: Paul Mundt

sh: Fix PC adjustments for varying opcode length.

2007-05-09T01:35:01+00:00

There are a few different cases for figuring out how to
size the instruction. We read in the instruction located
at regs->pc - 4 when rewinding the opcode to figure out if
there's a 32-bit opcode before the faulting instruction, with
a default of a - 2 adjustment on a mismatch. In practice this
works for the cases where pc - 4 is just another 16-bit opcode,
or we happen to have a 32-bit and a 16-bit immediately
preceeding the pc value.

In the cases where we aren't rewinding, this is much less ugly..

We also don't bother fixing up the places where we're explicitly
dealing with 16-bit instructions, since this might lead to
confusion regarding the encoding size possibilities on other
CPU variants.

Signed-off-by: Paul Mundt

sh: Add die chain notifiers.

2007-05-07T02:11:57+00:00

Add the atomic die chains in, kprobes needs these.

Signed-off-by: Paul Mundt

sh: generic BUG() support.

2007-05-07T02:10:53+00:00

Wire up GENERIC_BUG for SH. This moves off of the special bug
frame and on to the generic struct bug_entry. Roughly the same
semantics are retained, and we can kill off some of the verbose
BUG() reporting code.

Signed-off-by: Paul Mundt

sh: Fixup cpu_data references for the non-boot CPUs.

2007-02-13T01:54:45+00:00

There are a lot of bogus cpu_data-> references that only end up working
for the boot CPU, convert these to current_cpu_data to fixup SMP.

Signed-off-by: Paul Mundt

sh: Fix handle_BUG() compile error.

2007-02-13T01:54:45+00:00

handle_BUG() uses TRAPA_BUG_OPCODE which is only defined for
CONFIG_BUG, make sure it's not built when CONFIG_BUG=n.

Signed-off-by: Nobuhiro Iwamatsu 
Signed-off-by: Paul Mundt

sh: BUG() handling through trapa vector.

2006-12-11T23:42:08+00:00

Previously we haven't been doing anything with verbose BUG() reporting,
and we've been relying on the oops path for handling BUG()'s, which is
rather sub-optimal.

This switches BUG handling to use a fixed trapa vector (#0x3e) where we
construct a small bug frame post trapa instruction to get the context
right. This also makes it trivial to wire up a DIE_BUG for the atomic
die chain, which we couldn't really do before.

Signed-off-by: Paul Mundt